Air treatment device



FIG. 1 is a front, top, and right perspective view of an air treatment device;

FIG. 2 is a front elevational view of the air treatment device;

FIG. 3 is a rear elevational view of the air treatment device;

FIG. 4 is a right side elevational view of the air treatment device;

FIG. 5 is a left side elevational view of the air treatment device;

FIG. 6 is a top plan view of the air treatment device; and,

FIG. 7 is a bottom plan view of air treatment device.

The features shown in broken lines depict environmental subject matter only and form no part of the claimed design. In addition, the surface shading illustrated in the drawings is provided merely to highlight the contour of the design; it is not intended to be illustrative of texture or gloss. 

CLAIM The ornamental design for an air treatment device, as shown and described. 